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sc0Vu / yoethwallet

Another ethereum wallet.
MIT License
4 stars 2 forks source link

Remove dependency of ethereumjs-wallet #4

Closed sc0Vu closed 6 years ago

sc0Vu commented 6 years ago

I think it's good to remove dependency of ethereumjs-wallet and implement our own wallet.

The spec can find here https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition/b66dfbe3e84287f6fa61c079007255270cd20c14

PBKDF2-SHA-256

Test vector using AES-128-CTR and PBKDF2-SHA-256:

File contents of ~/.web3/keystore/3198bc9c-6672-5ab3-d9954942343ae5b6.json:

{
    "crypto" : {
        "cipher" : "aes-128-ctr",
        "cipherparams" : {
            "iv" : "6087dab2f9fdbbfaddc31a909735c1e6"
        },
        "ciphertext" : "5318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46",
        "kdf" : "pbkdf2",
        "kdfparams" : {
            "c" : 262144,
            "dklen" : 32,
            "prf" : "hmac-sha256",
            "salt" : "ae3cd4e7013836a3df6bd7241b12db061dbe2c6785853cce422d148a624ce0bd"
        },
        "mac" : "517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2"
    },
    "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6",
    "version" : 3
}

Intermediates:

Derived key: f06d69cdc7da0faffb1008270bca38f5e31891a3a773950e6d0fea48a7188551 MAC Body: e31891a3a773950e6d0fea48a71885515318b4d5bcd28de64ee5559e671353e16f075ecae9f99c7a79a38af5f869aa46 MAC 517ead924a9d0dc3124507e3393d175ce3ff7c1e96529c6c555ce9e51205e9b2 Cipher key: f06d69cdc7da0faffb1008270bca38f5 Scrypt

Test vector using AES-128-CTR and Scrypt:

{
    "crypto" : {
        "cipher" : "aes-128-ctr",
        "cipherparams" : {
            "iv" : "83dbcc02d8ccb40e466191a123791e0e"
        },
        "ciphertext" : "d172bf743a674da9cdad04534d56926ef8358534d458fffccd4e6ad2fbde479c",
        "kdf" : "scrypt",
        "kdfparams" : {
            "dklen" : 32,
            "n" : 262144,
            "r" : 1,
            "p" : 8,
            "salt" : "ab0c7876052600dd703518d6fc3fe8984592145b591fc8fb5c6d43190334ba19"
        },
        "mac" : "2103ac29920d71da29f15d75b4a16dbe95cfd7ff8faea1056c33131d846e3097"
    },
    "id" : "3198bc9c-6672-5ab3-d995-4942343ae5b6",
    "version" : 3
}

Intermediates:

Derived key: fac192ceb5fd772906bea3e118a69e8bbb5cc24229e20d8766fd298291bba6bd MAC Body bb5cc24229e20d8766fd298291bba6bdd172bf743a674da9cdad04534d56926ef8358534d458fffccd4e6ad2fbde479c MAC: 2103ac29920d71da29f15d75b4a16dbe95cfd7ff8faea1056c33131d846e3097 Cipher key: fac192ceb5fd772906bea3e118a69e8b

sc0Vu commented 6 years ago

HD derivation key wallet

Multi-Account Hierarchy for Deterministic Wallets

https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki

https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki

https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki

https://en.bitcoin.it/wiki/Mnemonic_phrase

The English-language wordlist for the BIP39 standard has 2048 words, if the phrase has 12 words then the number of possible combinations is 2048^12 = 2^132, so this phrase would have 132 bits of security.

Can use more than 12 words as seed?

https://en.bitcoin.it/wiki/Deterministic_wallet

m / purpose' / coin_type' / account' / change / address_index

hd root m/44'/60'/0'/0 address 1 m/44'/60'/0'/0/0/0 address 2 m/44'/60'/0'/0/0/1